CN103901657A - In-plane switching type liquid crystal display panel and display device - Google Patents
In-plane switching type liquid crystal display panel and display device Download PDFInfo
- Publication number
- CN103901657A CN103901657A CN201210581416.8A CN201210581416A CN103901657A CN 103901657 A CN103901657 A CN 103901657A CN 201210581416 A CN201210581416 A CN 201210581416A CN 103901657 A CN103901657 A CN 103901657A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal display
- type liquid
- substrate
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an in-plane switching type liquid crystal display device which comprises an in-plane switching type liquid crystal display panel. The in-plane switching type liquid crystal display panel comprises a first substrate, a second substrate opposite to the second substrate, an upper polarizing film, a lower polarizing film and a liquid crystal layer between the first substrate and the second substrate. The pixel voltage corresponding to each gray scale is not equal to zero. The polarizing directions of the upper polarizing film and the lower polarizing film are vertical. An included angle which is preferably 5 degrees or 8.1 degrees is formed between the friction direction of the polarizing films and the polarizing direction of the lower polarizing film. The in-plane switching type liquid crystal display panel further comprises a compensation film which compensates phase delay generated by interface liquid crystal molecules. By the in-plane switching type liquid crystal display panel, the response speed of the in-plane switching type liquid crystal display device can be increased greatly, process complexity can be lowered, and production cost can be lowered.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to switch type liquid crystal display panel and display device in a kind of face that improves response speed.
Background technology
In face, switch type liquid crystal display panel is the display panels of current main a kind of main flow, is released in calendar year 2001 by FDAC.In-plane switching liquid crystal display device mainly contains IPS(INPLAIN SWITCH) type and FFS(FRINGE FIELD SWITCH) two kinds, type.Liquid crystal molecule improves visual angle with the mode work at the rotation with in surface that is parallel to substrate, and the change that utilizes space thickness, frictional strength and effectively utilize transverse electric field to drive allows liquid crystal molecule do maximum Plane Rotation angle increases visual angle; In the manufacture of commodity, must additionally not add compensate film, level and vertical angle of view can reach the excellent specific property of super wide viewing angle, in the lifting at visual angle, can reach 178 degree.In face, switch type liquid crystal panel has the advantages such as visible angle is large, color is fine and smooth, looks more penetrating, but the response time is slow and power consumption height is also obvious shortcoming of this type panel.
And the slow main cause of the response speed that causes in-plane switching liquid crystal display device is under low pixel voltage, the time of gray scale response (Gray to Gray) is long, gray scale response speed is slow, and while especially startup since 0 pixel voltage, gray scale response speed is very slow.As shown in Figure 1, in-plane switching liquid crystal display device is slow in gray scale response speed corresponding to low pixel voltage, and the response time is long, and along with pixel voltage continues to increase, corresponding gray scale response speed accelerates, and the response time shortens.
In order to improve the response speed of in-plane switching liquid crystal display device, there are many developers to propose various technological means, the Chinese patent that is CN101916010A as publication number has proposed IPS～VA liquid crystal display of a kind of quick response and high penetration, in reducing electrode width and keeping electrode separation, adopt with the corresponding top glass substrate in center, lower glass substrate strip ITO pixel electrode gap on add that the mode of strip ITO public electrode, the oblique electric field in utilizations between lower glass substrate strip ITO electrode reach the object of raising response speed.
For another example the Chinese patent that publication number is CN1723412A has proposed switch type liquid crystal display in a kind of towering structure cell face with angle of friction, and rubbing angle is increased to 20 degree, is preferably 30～40 degree, to accelerate the response time of display.But this method can be brought the decline of penetrance, the driving complexity of towering structure cell simultaneously, and it is bad to be easy to defectiveness.
The shortcoming of prior art is easily to cause the reduction of penetrance when improving response speed, and can bring the complicated of technique.
Summary of the invention
The object of the invention is to propose a kind of in-plane switching liquid crystal display device, can increase substantially the response speed of switch type type liquid crystal indicator in face, and reduce the complexity of technique, reduce costs.
For reaching this object, the present invention by the following technical solutions:
A kind of in-plane switching liquid crystal display device, comprise switch type liquid crystal display panel in a kind of face, switch type liquid crystal display panel comprises in described a kind of face: first substrate, the second substrate relative with described first substrate, upper polarizer, lower polaroid and the liquid crystal layer between described first substrate and described second substrate, it is characterized in that, the pixel voltage that each GTG is corresponding is not equal to 0; The polarization direction of upper polarizer, lower polaroid is orthogonal, and there is an angle frictional direction and described lower polarization direction; Described in-plane switching liquid crystal display device also comprises compensate film, the phase delay that described compensate film compensation interface liquid crystal molecule produces.
Further, when black state, the pixel voltage that correspondence applies makes described liquid crystal molecule be parallel to lower polarization direction.
Further, the value of pixel voltage is 0.7V-1.3V.
Further, described compensate film is negativity A compensate film or biaxial compensation film.
Further, described angle is 2 °～8.1 °.
Further, described angle is 5 ° or 8.1 °.
Further, described compensate film is between described first substrate and described upper polarizer.
Compared with prior art, advantage of the present invention is to improve significantly the response speed of in-plane switching liquid crystal display device, reduces the complicacy of technique simultaneously, reduces production costs.
Accompanying drawing explanation
Fig. 1 is that the GTG of liquid crystal indicator is with the variation diagram of pixel voltage
Fig. 2 is the structural drawing of switch type liquid crystal display panel in the face in the specific embodiment of the invention.
Fig. 3 is the structural drawing of switch type liquid crystal display panel in the face in the specific embodiment of the invention.
Fig. 4 a is the schematic diagram of border liquid crystal light leak.
Fig. 4 b is the schematic diagram that negative A compensate film compensates border liquid crystal light leak.
Fig. 5 is the variation diagram of liquid crystal indicator penetrance T under different pixels voltage.
The technical characterictic that Reference numeral in figure refers to is respectively:
1, lower polaroid, 2, electrode, 3, liquid crystal layer, 4, compensate film, 5, upper polarizer, 6, first substrate, 7, second substrate, I, frictional direction, the polarization direction of II, lower polaroid, direction after III, middle layer liquid crystal molecule Plane Rotation, the polarization direction of IV, upper polarizer, Vn is pixel voltage, T is penetrance, t is GTG, a, reaches before black state the relation curve of pixel voltage and penetrance, b, reach after black state, pixel voltage continues to increase, the relation curve of pixel voltage and penetrance, c, black state.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not entire infrastructure.
Specific embodiment one:
The in-plane switching liquid crystal display device that the embodiment of the present invention one provides comprises switch type liquid crystal display panel in one side, and in this face, switch type liquid crystal display panel comprises the first substrate 6 and the second substrate 7 that are oppositely arranged; Be held on the liquid crystal layer 3 between first substrate 6 and second substrate 7; Be arranged at the upper polarizer in first substrate 6 outsides; Be arranged at the lower polaroid in second substrate 7 outsides; And compensate film 4.Under normal circumstances, first substrate 6 is referred to as again color membrane substrates, and second substrate 7 is referred to as again thin film transistor (TFT) (THIN FILM TRANSISTOR, TFT) array base palte.Second substrate 7 comprises lower transparency carrier and is positioned at the pel array (not shown) on lower transparency carrier; Pel array comprises multi-strip scanning line and many data lines that insulation intersects, and is arranged at the pixel cell of sweep trace and data line infall, and each pixel cell comprises switching TFT, pixel electrode and public electrode 2.
As shown in Figure 2, the frictional direction of liquid crystal molecule is I, and the paster angle that lower polaroid is set is II, and Φ is the angle of frictional direction I and lower polarization direction II.Angle Φ becomes a funtcional relationship with penetrance T: T=γ sin
2(2 φ), γ is a constant, and pixel voltage Vn becomes a funtcional relationship T=f (Vn) with penetrance T, and the pixel voltage here refers to the pressure reduction absolute value between public electrode and pixel electrode.
When pixel voltage is 0V, between pixel electrode and public electrode, be not applied in voltage, liquid crystal molecule so, comprises the liquid crystal molecule that is positioned at first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 and is positioned at middle layer, all arranges along frictional direction I.Being positioned at the phase delay that first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 produce is Δ nd1.Compensate film compensates the phase delay delta nd1 that is positioned at first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 and produces, the phase delay that compensate film produces is-Δ nd2, design Δ nd1-Δ nd2=0, now, total phase delay of the polarized light of process first substrate 6 and second substrate 7 lip-deep liquid crystal molecules is 0, be that the lip-deep liquid crystal molecule penetrance of first substrate 6 and second substrate 7 is zero, but because compensate film can not compensate the liquid crystal molecule that is positioned at middle layer, and the now orientation of the liquid crystal molecule in middle layer (the namely frictional direction I of liquid crystal molecule) is different from the direction of lower polaroid, there is above-mentioned angle Φ, therefore now the overall penetrance of polarized light is non-vanishing, it is not black state.
As shown in Figure 3, when pixel voltage Vn is a little bias voltage, and Vn is not equal to 0, as Vn=0.7V etc., middle layer liquid crystal molecule turns over an angle Φ, the Liquid Crystal Molecules Alignment direction that is middle layer is identical with lower polarization direction, and perpendicular to upper polarization direction, the penetrance of the polarized light of the corresponding liquid crystal molecule through middle layer is zero.Be positioned at first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 because grappling is not rotated, it produces phase delay delta nd1 to light, as shown in Figs. 4a and 4b, compensate film (nx<ny, refractive index in the face that wherein nx is X-direction, ny is refractive index in the face in Y direction,) X-direction be parallel to long axis of liquid crystal molecule direction ne, there is an angle Φ this long axis of liquid crystal molecule direction ne and lower polarization direction, and the Y direction of compensate film is parallel to liquid crystal molecule minor axis orientation no.The phase delay that compensate film produces is-Δ nd2 that wherein, phase delay becomes a funtcional relationship: T=sin with penetrance T
2(2 φ) sin
2(2 π d Δ n/ λ), the d Δ n is here phase delay.Design Δ nd1-Δ nd2=0, the total phase delay of polarized light after first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 and compensate film compensation is zero so, its polarization direction does not change, still perpendicular to the polarization direction of upper polarizer, the penetrance of the corresponding liquid crystal molecule through middle layer is also zero, thereby the liquid crystal molecule in middle layer and the penetrance T of lip-deep liquid crystal molecule are zero, the penetrance of light be totally zero, realize black state (can be defined as 0 GTG).Black state is C point in accompanying drawing 5, pixel voltage from 0V to Vn corresponding permeability variations as shown in accompanying drawing 5 middle conductor a.
When pixel voltage continues to increase, the angle that middle layer liquid crystal molecule turns over is also increasing, and as shown in accompanying drawing 5 middle conductor b, the penetrance of corresponding light is also increasing, and the penetrance of corresponding light is non-vanishing.When pixel voltage increases to while making angle that the liquid crystal molecule in middle layer turns over and Ji Shang polarization direction, lower polarization direction all at 45 °, the penetrance of corresponding light reaches maximal value, realizes white state (can be defined as maximum gray, as 255 etc.).And be positioned at first substrate 6 and the lip-deep liquid crystal molecule of second substrate 7 because grappling is not rotated, its phase delay that light is produced is still compensated by compensate film, through the polarized light of lower polaroid, the total phase delay after liquid crystal boundary layer and compensate film compensation is still zero so, its polarization direction does not change, be that polarization direction is still perpendicular to upper polarization direction, therefore, the penetrance of corresponding light is to be also zero.
It should be pointed out that the present embodiment is the process that is applied to c Points And lines section b in Fig. 5, and in the present embodiment, mention in the time that pixel voltage equals 0.7V, the polarization direction of lower polaroid and the angle Φ of frictional direction be set be only for example a kind of and non-limiting.For example, can also make pixel voltage equal 1.1V, 1.3V etc., correspondingly respectively arrange the polarization direction of lower polaroid and the angle Φ of frictional direction equals 5 °, 8.1 ° etc.
In sum, the in-plane switching liquid crystal display device that the embodiment of the present invention provides, while not connecting power supply, the pixel voltage of original state is 0, the penetrance of light is not 0; After switching on power, pixel voltage makes Liquid Crystal Molecules Alignment direction be rotated into the direction identical with polarization direction from frictional direction, converts black state (0 GTG) to from original state, and the penetrance of light is never 0 to change 0 into; While having image to show, convert other GTGs to, or change between each GTG from 0 GTG (black state), pixel voltage is non-vanishing all the time, and the gray scale response speed of liquid crystal molecule is fast.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious variations, readjust and substitute and can not depart from protection scope of the present invention.Therefore, although the present invention is described in further detail by above embodiment, the present invention is not limited only to above embodiment, in the situation that not departing from the present invention's design, can also comprise more other equivalent embodiment, and scope of the present invention is determined by appended claim scope.
Claims (8)
1. switch type liquid crystal display panel in a face, comprise: first substrate, the second substrate relative with described first substrate, upper polarizer, lower polaroid and the liquid crystal layer between described first substrate and described second substrate, is characterized in that, the pixel voltage that each GTG is corresponding is not equal to 0; The polarization direction of upper polarizer, lower polaroid is orthogonal, and there is an angle frictional direction and described lower polarization direction; Described interior switch type liquid crystal display panel also comprises compensate film, the phase delay that described compensate film compensation interface liquid crystal molecule produces.
2. according to claim 1 interior switch type liquid crystal display panel, is characterized in that, when black state, the pixel voltage that correspondence applies makes described liquid crystal molecule be parallel to lower polarization direction.
3. according to claim 2 interior switch type liquid crystal display panel, is characterized in that, the value of described pixel voltage is 0.7V-1.3V.
4. according to claim 1 interior switch type liquid crystal display panel, is characterized in that, described compensate film is negativity A compensate film or biaxial compensation film.
5. according to claim 1 interior switch type liquid crystal display panel, is characterized in that, described angle is 2 °～8.1 °.
6. according to claim 5 interior switch type liquid crystal display panel, is characterized in that, described angle is 5 ° or 8.1 °.
7. according to claim 1 interior switch type liquid crystal display panel, is characterized in that, described compensate film is between described first substrate and described upper polarizer.
8. an in-plane switching liquid crystal display device, comprises switch type liquid crystal display panel in the face as described in any one in claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581416.8A CN103901657B (en) | 2012-12-27 | 2012-12-27 | A kind of in-plane switching type display panels and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581416.8A CN103901657B (en) | 2012-12-27 | 2012-12-27 | A kind of in-plane switching type display panels and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103901657A true CN103901657A (en) | 2014-07-02 |
| CN103901657B CN103901657B (en) | 2016-09-21 |
Family
ID=50993082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210581416.8A Active CN103901657B (en) | 2012-12-27 | 2012-12-27 | A kind of in-plane switching type display panels and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103901657B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019720A (en) * | 2016-05-31 | 2016-10-12 | 京东方科技集团股份有限公司 | Substrate for display, display device and curved-surface display device |
| CN112099270A (en) * | 2020-09-30 | 2020-12-18 | 京东方科技集团股份有限公司 | Horizontal electric field type display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144474B2 (en) * | 1997-02-13 | 2001-03-12 | 日本電気株式会社 | Active matrix liquid crystal display panel |
| TW548618B (en) * | 1998-11-13 | 2003-08-21 | Fujitsu Display Tech | In-plane switching liquid crystal display device |
| KR20060134364A (en) * | 2005-06-22 | 2006-12-28 | 엘지.필립스 엘시디 주식회사 | In plane switching mode liquid crystal panel |
| CN1969225A (en) * | 2004-04-27 | 2007-05-23 | 富士胶片株式会社 | Liquid crystal display device |
-
2012
- 2012-12-27 CN CN201210581416.8A patent/CN103901657B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144474B2 (en) * | 1997-02-13 | 2001-03-12 | 日本電気株式会社 | Active matrix liquid crystal display panel |
| TW548618B (en) * | 1998-11-13 | 2003-08-21 | Fujitsu Display Tech | In-plane switching liquid crystal display device |
| CN1969225A (en) * | 2004-04-27 | 2007-05-23 | 富士胶片株式会社 | Liquid crystal display device |
| KR20060134364A (en) * | 2005-06-22 | 2006-12-28 | 엘지.필립스 엘시디 주식회사 | In plane switching mode liquid crystal panel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019720A (en) * | 2016-05-31 | 2016-10-12 | 京东方科技集团股份有限公司 | Substrate for display, display device and curved-surface display device |
| CN112099270A (en) * | 2020-09-30 | 2020-12-18 | 京东方科技集团股份有限公司 | Horizontal electric field type display panel and display device |
| US11899304B2 (en) | 2020-09-30 | 2024-02-13 | Beijing Boe Display Technology Co., Ltd. | Liquid crystal display panel and driving methods therefor, and display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103901657B (en) | 2016-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103135293A (en) | Lateral electric field liquid crystal display device and manufacturing method thereof | |
| US9645453B2 (en) | Liquid crystal panel having a plurality of first common electrodes and a plurality of first pixel electrodes alternately arranged on a lower substrate, and display device incorporating the same | |
| CN102629045B (en) | Array substrate and liquid crystal display | |
| CN100555052C (en) | A kind of LCD of passive driving | |
| US9513505B2 (en) | Transflective liquid crystal display panel and liquid crystal display device | |
| CN102707489B (en) | Liquid crystal display panel | |
| CN202141872U (en) | Semi-transmission semi-reflection liquid crystal display panel and display equipment | |
| CN104317106A (en) | Display substrate, manufacturing method of display substrate and display device | |
| CN104765208A (en) | Liquid crystal display panel | |
| CN102629058B (en) | Array substrate, liquid crystal display device and orientation friction method | |
| CN104297997A (en) | Liquid crystal display panel, and display method and display device thereof | |
| CN102654686B (en) | Liquid crystal display panel and display device | |
| CN201368957Y (en) | LCD (liquid crystal display) device with ultra-high contrast ratio and ultra-wide viewing angle | |
| CN102439517A (en) | Liquid crystal panel, method for manufacturing same, and liquid crystal display device | |
| CN103901657A (en) | In-plane switching type liquid crystal display panel and display device | |
| CN102402068B (en) | Multi-domain vertical alignment LCD (liquid crystal display) panel | |
| CN202285073U (en) | Color film substrate and display panel | |
| CN104503143A (en) | Transflective liquid crystal display and manufacturing method thereof | |
| US9904126B2 (en) | Liquid crystal display device | |
| CN203376537U (en) | Half-transmission and half-reflection liquid crystal display panel and display device | |
| CN103207478B (en) | Liquid crystal panel with electric field controlled birefringence mode and liquid crystal display device thereof | |
| CN2800327Y (en) | Liquid crystal display device | |
| CN1979294A (en) | Systems for displaying images | |
| CN203365866U (en) | Liquid crystal display panel and display device | |
| CN103399436A (en) | All-view vertical alignment liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |